I have the same issue with visible spoilers (IE 8 at my current location, Firefox 15 at home) . Good job on the smooth transition to the new look. I would like a darker theme, if it is possible, this one for some reason looks brighter than the previous one.

I tested the new search engine, and it apparently works just as bad as the previous one: I tried to find information about Mary Gentle and her new book Black Opera, I tried different search combinations, including searching the specific thrread for new fantasy/horror publications in 2012, and got absolutely nothing. I searched manually in the thread and the two titles (book and author) are mentioned there alright, but the search button only uses one word of the two, either Mary or Opera instead of the combination of two words. even thwen it didn't flag the correct Mary or Opera.

Diggin' the update. One minor thing I noticed is an issue with pagination. On the New Posts list screen there has, at least a couple times, appeared to be 2 pages of results, but when I click page 2 I just get "Sorry - no matches. Please try some different terms." I'm not sure if there really are additional new posts and I just can't get to them or if the 2nd page link is bogus.

Diggin' the update. One minor thing I noticed is an issue with pagination. On the New Posts list screen there has, at least a couple times, appeared to be 2 pages of results, but when I click page 2 I just get "Sorry - no matches. Please try some different terms." I'm not sure if there really are additional new posts and I just can't get to them or if the 2nd page link is bogus.

"New posts" doesn't quite seem to work the way it used to. Previously, it would list all posts since last time I logged in. Now, well, I'm not sure what it does.
The other change which has unsettled me is the thread icons. Previously, threads with new posts were coloured, those with no updates were grey. Now, colour indicates the thread is "hot" (!), and there's an open/closed envelope icon showing unread posts. It's broken the way I scan the forum (but hey, maybe no one else is bothered).